1 Use a cock ring. 2  A very easy way to keep an erection is to use a cock ring during sex. 3  A cock ring is an adjustable plastic band that fits over the base of the penis and behind the testicles. 4  A cock ring gives a man a rock hard erection, and desensitizes the penis so he can keep an erection longer.
A Master Chief Petty Officer is a Senior Noncommissioned Officer, with a military paygrade of E-9. The civilian equivalent of this military rank is roughly GS-6 under the federal government's General Schedule payscale.
The Senior Chief and Master Chief rates would later be established on June 1st, 1958. In order to be eligible to be advanced to Senior Chief, a Chief has to have served a minimum of three years in his or her current grade.